baber/WOPTO huggingface dataset:
Patent GB-799983-A (GB)
Title: Improvements in and relating to magnetrons
IPC: H01J23/213
Filed: 1953-08-31
Abstract: 799,983. Magnetrons. JAKOBSBERGS ELEKTROTEKNISKA FABRIKER AKTIEBOLAG. Aug. 31, 1955 [Sept. 1, 1954], No. 25066/55. Class 39(1). A multi-cavity magnetron is tuned by movement of teeth 7 within a groove 5 at one end of the anode structure, the teeth being mounted on a rotatable support 6. The teeth may be shaped to give a desired frequency variation, e.g. a pulse-shaped or sinusoidal variation, and the number of teeth may equal or be a multiple of the number of anode cavities. The support 6 may be wholly insulating or carry a conducting cylinder to which the teeth are attached, and may be rotated continuously or oscillated. The groove 5 may be nearer to the centre of the anode structure. More than one groove with corresponding teeth may be provided.
Patent GB-390806-A (GB)
Title: Improvements in manhole covers & frames
IPC: E02D29/12
Filed: 1931-09-08
Abstract: 390,806. Hinges. HARTLEY, C. J., Cae Brest, The Avenue, Harpfields, Stokeon-Trent. Sept. 8, 1931, No. 25145. [Class 65 (ii).] A triangular manhole cover is hinged to its frame by means of cylindrical lugs B, Figs. 2 and 3, bearing on corresponding seatings D in the frame ; detachment is prevented by a bolt A passing through large holes in the lugs B and entering apertures K in the frame, being held by nuts L. In a modification, the apertures K are open-ended slots, to allow detachment of the cover with the rod A. In another form, Fig. 6, the cover has two lugs N which engage in curved slots Q in the frame ; the cover is detachable when closed, and the lugs prevent dirt from entering the slots.
Patent GB-696347-A (GB)
Title: Reciprocating pump for dispensing liquids
IPC: F16N3/08
Filed: 1951-10-29
Abstract: 696,347. Reciprocating pumps. JENETT, A. H. Oct. 29, 1951 [Nov. 2, 1950[, No. 25270/51. Class 102 (i). In apparatus for dispensing liquids, the barrel 11 forms the reservoir and is closed at one end by the nozzle head 14, which contains the cylinder 41 and outlet 22, and at the other end by a plug 13. A rod 19 passes through the barrel and carries a piston 18 having a groove 24 which permits liquid to flow into the cylinder 41 when the piston is at the end of its inner stroke. The rod 19 is secured to a finger-piece 32 which is loaded by a spring 36 and has a conical surface 33 so that when the finger-piece is screwed into the plug the surfaces contact and prevent leakage from the reservoir and also a valve 23 on the end of the rod 19 seats in the nozzle head and prevents leakage' from the outlet. The inward stroke of the piston is limited by a washer 39, adjacent an enlargement 38 on the rod 19, engaging the plug.
Patent GB-983703-A (GB)
Title: Stabilized polyoxyalkylenes and process for preparing them
IPC: C08K5/3492
Filed: 1961-07-12
Abstract: Polyoxyalkylenes consisting of homopolymers or copolymers are stabilized with 0.1 to 10% calculated on the polyoxyalkylene of a stabilizer of formula <FORM:0983703/C3/1> where n is 1,2 or 3,R1 is hydrogen or C1- 5 alky or an aryl radical, X is -O-, -S-, -NH-, or -NR11, where R11 is C1- 4 alkyl or a heterocyclic radical bound through the nitrogen atom, Y is two hydrogen or one oxygen atoms, R is hydrogen, alkyl, alkenyl, alkylene, aryl, aralkyl, alkylaryl, cycloalkyl, acyl, carbamide, thiocarbamide or heterocyclic radical and wherein R is omitted when X is -S-, or -NH and when n is 2. Specified stabilizers are trialkyl cyanurate, diallyl ether, dialkyl thioether, phthalic acid dialkylester, N-N-dialkyl malonic acid diamide, hexamethylene-bis-acrylamide, alkylhydantoin, alkylthiohydantoin, dialkylthiourea, methylene-bis-acrylamide, methylene-bis-crotonamide, crotonic acid amide, dialkyl sulphide, acetic acid alkyl ester, ortho-eugenol, the alkyl of acetoacetic acid and N-N1-diacryloyl-hydrazine The polymer may be a homopolymer of trioxane or a copolymer of trioxane and a formal or a cyclic ether, e.g., diethyleneglycol formal, dioxalene, butanediol formal, ethylene oxide, propylene oxide, oxacyclobutane or tetrahydrofurane.  A co-stabilizer, e.g. a phenol, a hydrogenated phenol and an organic sulphur compound containing at least one -SH, -Sn or =S group (n being 1 to 4) or a dicarboxylic acid diamide may also be present. Specified costabilizers are methoxynonylphenol, 2 - 6 - dimethylol - p - cresol, the condensation product of acetone and nonylphenol, 2 - 6 - diisobornyl - p - cresol or the condensation product of o-cresol, camphene and formaldehyde in which the double bonds are hydrogenated to an extent of 25%, or a phenolic compound hydrogenated to an extent of 80%.  Specifications 748,836, 854,278, 914,708, 943,684, 956,457 and 971,262 are referred to.
Patent GB-1128993-A (GB)
Title: Improvements in or relating to the production of vinyl acetate
Inventor: DURSTON PETER JOHN
IPC: B01J23/58
Filed: 1966-06-07
Abstract: 1,128,993. Vinyl acetate. B.P. CHEMICALS (U.K.) Ltd. 9 May, 1967 [7 June, 1966], No. 25318/66. Heading C2C. [Also in Division B1] Vinyl acetate is prepared by reacting in the vapour phase at elevated temperature ethylene, a molecular oxygen-containing gas and acetic acid in the presence of a catalyst comprising a platinum group metal deposited on titania, an alkali metal, alkaline earth metal, zinc, cobalt, nickel or iron silicate or mixtures thereof or mixtures of titania and/or such metal silicates with silica as support. Platinum, palladium, rhodium, ruthenium, osmium or iridium are used in the form of metal, oxide or salt. The metal form may be prepared by the reduction of the salt with hydrazine hydrate. The catalyst may be reactivated by heating in an alkaline medium. Examples describe the use of palldium/titania; palladium/cobalt silicate; palladium/mixed titania, sodium meta silicate; and palladium/ silica #-titania catalysts.
Patent GB-821025-A (GB)
Title: Improvements in or relating to devices for the automatic control of the medium density and of the medium level of the dense medium connected with washeries for coal, oreand other minerals
IPC: G01N9/26
Filed: 1955-09-05
Abstract: 821,025. Fluid-pressure servomotor control systems. WESTFALIA DINNENDAHL GROPPEL A.G. Sept. 5, 1955 [Sept. 18, 1954], No. 25390/55. Class 135. In washeries for coal, ore and the like, a device is provided for automatically controlling the density and also the level of the dense medium in the washery. The device comprises a wedge-shaped baffle member 8 movable between opposed nozzles 9, 10 supplied with compressed air through restricted orifices and pipes leading also to air-operated valves controlling respectively the admission of fresh stock and water. The baffle member 8 is movable vertically to control the nozzles differentially by a spindle 6 attached to a diaphragm 5 loaded by an adjustable spring 7. Opposite sides of the diaphragm 5 are open to the pneumatic pressures in two pipes 2, 3 immersed in the liquid suspension bath 1 to different levels, the pipes being supplied with compressed air through restricted orifices (not shown). The pressure difference acting on the diaphragm is thus a measure of the specific gravity of the liquid. The adjustment according to the suspension level is effected by a diaphragm 12 responsive to the pressure in one of the pipes. The diaphragm 12 moves the baffle member 8 in a direction at right angles to the axis of the nozzles and thus covers or uncovers the nozzles more or less to the same extent. In a modification, the diaphragms 5, 12 are arranged in the same plane and the diaphragm 12 acts on the baffle member 8 through a bell-crank lever. In cases where the level of the dense medium is determined by an overflow, the diaphragm is arranged to be ineffective to displace the baffle member at right angles to the axis of the nozzles 9, 10.
Patent GB-425319-A (GB)
Title: Improved construction of water heater
IPC: F22D1/20
Filed: 1933-09-14
Abstract: 425,319. Serpentine - tube heat - exchangers. LIVSEY, H., Economiser Works, CalderVale Road, Wakefield, Yorkshire. Sept. 14, 1933, No. 25478. [Class 64 (iii)] A heat-exchanger for heating feedwater by waste flue gases comprises a fan with a series of horizontal tubes 12 arranged between the fan blades 11<a> and an outer casing 1, the water passing in a zig-zag manner through the tubes. The gas may be drawn through openings 8 along the fan shaft 10 and expelled through an opening in the casing 1, or is drawn in from an opening 2 in the casing and expelled through a duct surrounding the fan shaft ; in the latter form an inner wall 15 almost wholly surrounds the fan. Water enters at lower headers 12b into the gilled tubes 12 connected in zig-zag manner by bends 12<a>. The fan in Fig. 2 has a central disc 11 on the shaft carrying blades 11<a>, air drawn in through openings 8 being led to the tubes by cross plates 9. According to the Provisional Specification, air may be passed through the tubes.
Patent GB-473727-A (GB)
Title: Improvements in the gluing of wood plies and veneers
IPC: C09J189/00
Filed: 1936-09-19
Abstract: Wood plies are united by applying an adhesive comprising animal glue, a - or b -naphthalene sulphonic acid or a water-soluble salt thereof, and formaldehyde or a polymer thereof, with or without a filler, and subjecting the whole to heat and pressure.  Specification 439,445 is referred to.
Patent GB-423254-A (GB)
Title: Improvements in or relating to supporting and releasing devices for protective grilles for windows, show cases, and the like
IPC: E06B9/04
Filed: 1934-09-14
Abstract: 423,254. Window-guards. TIBBLES, H. J., Brodsworth, Blenheim Crescent, Leighon-Sea, and RELY-A-BELL BURGLAR & FIRE ALARM CO., Ltd., 49A, Wilson Street, Finsbury Square, London. Sept. 14, 1933, No. 25507. [Class 20 (iii)] A window-guard 4 is interposed to prevent theft, by the release of a pivoted retaining catch 3, through disturbance of the window pane transmitted by the arm 6 adjustably secured to the catch. The arm 6 is pivoted at 8 to the catch and adjustably bolted to it by a slotted bracket 9 and is curved at its end 13 to allow the guard to pass it. The guide for the guard and the bottom slat of the guard have co-operating brackets 17, 18, to prevent accidental release. The arm 6 may be adjustably connected by a setscrew, or by pin and holes, to the catch. The guard may be adapted for horizontal movement, spring-control being provided for the arm 6 and for the guard. The arm 6 which bears on the window may be integral with or rigidly secured to the catch. The catch may be retained in the released position by a pivoted pawl 21, Fig. 4, the pawl being released by an L-shaped member 23 tripped by the ascending shutter. The device may be applied to guards as described in Specifications 335,311, [Class 20 (iii)], and 408,384, [Group I].
Patent GB-601339-A (GB)
Title: Improvements in linear-dimension gauging devices
IPC: G01B13/02
Filed: 1945-10-02
Abstract: 601,339. Fluid-flow meters. SHEFFIELD CORPORATION. Oct. 2, 1945, No. 25522. Convention date, Jan. 10. [Class 69 (i)] [Also in Group XIX] In a gauging-device for linear-dimensions, employing fluid flow through a leakage path between the gauge and work-piece and comprising a casing for a tube through which air or other fluid flows to displace a weight indicator, a back plate for the casing is readily removable and carries the tube with its supporting and clamping means, a filter housing, and a fluid-pressure regulating- valve. As shown, the casing 10 is grooved at 20 and 23 to receive respectively the base of a back plate 19 and a catch 21 thereon operated by a knob 22. A tapered tube 12, in which is a weight 13, is supported on a housing for an air filter 35, and clamped by a spring arm 46, the housing and arm being secured to the back plate. Air is supplied under pressure in piping through a regulating-valve 30 and shut-off valve 31, secured to the back plate, and a pipe 33 to the air filter housing, then up through the tube 12 to piping 53 connected to an outlet 15. A scale 56 behind the tube 12 rests in grooves in the filter housing and is held at the upper end by the spring arm 46. The filter pad in the air filter can be removed by unscrewing a cap 39. A passage 40 provided with a removable plug 41 collects any liquid from the filter. To prevent the weight 13 from sticking to the top of the tube 12 and to discharge any electrical charge thereon, a metal finger 63 on a spider 64 is secured in the top of the tube.
Patent GB-1284660-A (GB)
Title: Dispersal of flammable materials
Inventor: CUDE ARTHUR LESLIE
IPC: A62C99/00
Filed: 1970-05-27
Abstract: 1284660 Dispersing flammable vapour IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [27 May 1970] 25528/70 Heading A5A Flammable heavier-than-air vapour is dispersed by restraining the horizontal advance of the vapour and, by means of turbulent steam jets, entraining the vapour together with sufficient air to reduce the vapour concentration below its lower flammability limit. Concrete panel wall 1 of 1.5 metres height is spaced 12 metres from ethylene plant 2 and has perforated pipe 3 mounted thereon to provide a 30m. wide steam curtain from upwardly directed jets 4. Vapour detectors 5 situated between plant 2 and wall 1 detect escaping ethylene vapour and can be used to actuate the steam barrier. The invention is also applicable to vapours of petrol or liquefied petroleum gas.
Patent GB-507994-A (GB)
Title: Improvements in and relating to the projection and viewing of pictures with stereoscopic effect
IPC: G03B35/24
Filed: 1937-09-21
Abstract: 507,994. Stereoscopic projection. VONCK, G. H. C., KEIJZER, A. J., and BOISSEVAIN, J. Sept. 21, 1937, No. 25535. Convention date, Sept. 21, 1936. [Class 97 (i)] Stereoscopic pairs of pictures are projected on to a screen through a grating having slits narrower than the bars and from two points spaced apart, the lens or lenses of the projector having a large aperture; the bars of the grating may have a substantial thickness, and may be of round or square section. As shown, a projector 116, having spaced lenses 120, 121 of large aperture, projects the pictures through a grating 118 comprising round bars and having slits substantially narrower than the bars, on to a screen 119. The axes of the lenses may be 65 mm. apart, and their apertures may be 60 mm. The apparatus permits the images to be viewed within a field 101 ... 104 which is considerably larger than the field 105 ... 108 within which viewing is normally possible. The viewing field comprises a number of areas 141, 142, 145, 144 and 142, 143, 146, 145, within which right and left eyes may be, respectively, situated. Projection of the two images may be effected simultaneously by the lenses 120, 121 or may be effected alternately by a single lens and an arrangement of prisms or mirrors. German Specification 259,080 is referred to.
Patent GB-486178-A (GB)
Title: Improvements in and relating to pyrophoric pocket lighters
IPC: F23Q2/08
Filed: 1937-09-21
Abstract: 486,178. Frictional pocket igniters. KELLERMANN, H. Sept. 21, 1937, No. 25610. Convention date. July 9. [Class 75 (iii)] In an igniter which is operated by the opening of a spring-actuated pivoted cover, the cover 5 is provided with lateralnotches 10 for engaging a pivoted spring-controlled latch 11 having a handle 15 projecting through a slot in the casing. In the form shown, the wick-tube 2 and the mechanismare carried by a removable member 1, and the cover 5 is indented to complete the heart shape of the igniter.
Patent GB-278367-A (GB)
Title: Improvements in and relating to crucibles
IPC: F27B14/10
Filed: 1927-09-28
Abstract: 278,367. British Thomson-Houston Co., Ltd., (Assignees of Unger, M.). Oct. 1, 1926, [Convention date]. Refractory substances containing fireclay and carbon.-The pores of a, fireclay crucible are filled with, say, carbon by impregnating it with, say, coal-tar pitch and gradually baking to drive off the volatile components, the treatment being repeated if necessary. Impregnation may be effected in vacuo.
Patent GB-391449-A (GB)
Title: Improvements in structures and a method of and means for forming the same
IPC: E04B2/84
Filed: 1931-09-14
Abstract: 391,449. Walls; floors; roofs. GARRETT, N., 1304, Carmen Drive, Glendale, California, U.S.A. Sept. 14, 1931, No. 25737. [Classes 20 (ii) and 20 (iv).] Cementitious material is plastered over two spaced sheets of non-rigid foraminous reinforcing material, and portions of connecting members extending between the sheets are embedded in the cementitious material. In the form shown, for constructing a wall, pipes 1 are driven into the ground, pipes 2 are clamped horizontally thereon, and rods 4 are clamped to the pipes 2. Expanded metal, wire mesh, or netting 7 is threaded over the rods 4 and gripped between the clamps 5 and removable panels 6, which are held in position by pins 8 passing through holes in the rods 4. A second row of panels 6 is aligned by pins 9, and a sheet of reinforcement 10 is held against the panels by strips 11 and pins 12. The panels 6 may be built up in courses to any desired height, connecting members, such as expanded metal 15 or rows of sheet-metal ties, being held in the gaps between the panels, Fig. 7, by engagement with the reinforcing-sheets 7, 10. Plaster is applied to the outer faces of the reinforcing- sheets and forced into the recesses formed by the bevelled edges 16 of adjoining panels. When the plaster has set, the rods 4 are rotated so as to drop the pins 8, 9. The panels 6 can then be removed. Floors and roofs may be similarly constructed.
Patent GB-1190962-A (GB)
Title: Improvements in Electrically Insulating Papers
IPC: H01B13/30
Filed: 1967-06-05
Abstract: 1,190,962. Covering cores with strip material. PIRELLI S.p.A. 5 June, 1967 [25 March, 1967], No. 25760/67. Heading B8G. [Also in Divisions D2 and H1] A strip or strips of a compound paper having at least one layer of a first component paper having a density not exceeding 0-7 g./c.c., and at least one layer of a second component paper having an impermeability of not less than 10<SP>7</SP> Emanueli units is helically wound on to a cable, the pitch of the helix being greater than the width of the strip, the cable being covered by multiple overlapping layers of the strip. The covering may be impregnated with mineral and/or synthetic oils. If a two componentlayer paper is used, then the high-impermeability layer is preferably towards the cable.
Patent GB-992136-A (GB)
Title: Process for the hydroformylation of olefinic compounds
IPC: B01J31/20
Filed: 1962-07-05
Abstract: Olefins are hydroformylated by contacting with carbon monoxide and hydrogen, preferably at 500 to 5000 p.s.i. 100-300 DEG  C., in the presence of a complex of chromium, molybdenum or tungsten and a substituted or unsubstituted pyridine, which includes polynuclear pyridines.  Specified pyridines include 2-chloro pyridine, 3 picaline, ethyl nicotinate, quinoline 3-cyano pyridine, entidine and 3,5-dichloropyridine. Examples of products obtainable are 1-heptanal and 1-heptanol, 3-chloro 1-propanal and 3-chlorol propanol, 4-acetoxybutanol and 4-acetoxy butanyl, formyl cyclopentane and hydroxy methyl cyclopentane, diethyl formyl succinate and diethyl (hydroxy methyl) succinate, 4-phenyl butanal and 4-phenyl-1-butanol. In the detailed example wherein the catalyst is prepared in situ from pyridine and the hexacarbonyl of Mo, W, Cr, the effect of the metal on the isomer formed as product is given.ALSO:Macromolecular olefins, e.g. polybutadiene and styrene butadiene copolymer are stated to be hydroformylated by contacting with carbon monoxide and hydrogen and a catalyst which is a complex of Cr, W or Mo and a substituted or unsubstituted pyridine, which includes polynuclear pyridine derivatives especially at elevated pressures and temperatures.
Patent GB-443794-A (GB)
Title: Improvements in, or relating to, electrical coupling sockets
IPC: H01R13/453
Filed: 1934-09-08
Abstract: 443,794. Plug-and-socket couplings. CRABTREE, J. A., Endwood, Little Aston Park, Sutton Coldfield. Sept. 8, 1934, Nos. 25859 and 27014. [Class 38 (i)] Insulating shutters normally covering the sockets slide apart against spring action when the plug-pins are correctly applied, but if it is attempted to insert only one pin, the shutters move angularly or laterally so as to jam in their housing and prevent such insertion. As shown in Fig. 4, the shutters b, b<1> urged together by springs d jam against the sides of the housing, or co-operating projections and recesses e, e<1> foul when the shutters move angularly under single-pin pressure. In other forms such as in Fig. 6, the shutters upon single-pin entry move sideways, due to inclined surfaces f, f<1>, g, g<1> being formed on the shutters for engagement by the pins. Specification 410,505 is referred to. The first Provisional Specification also suggests the prevention of incorrect application of the plug member by forming inclined planes on the ends of the pins to engage the inclined surfaces which in this case do not meet on the central line of the sockets,
Patent GB-414910-A (GB)
Title: Screw-locking devices
IPC: F16B39/10
Filed: 1933-09-19
Abstract: 414,910. Locking nuts. CERTAXSCHRAUBE GES., 25, Pariserstrasse, Berlin. Sept. 19, 1933, No. 25920. Convention date, Sept. 20, 1932. [Class 89 (i).] The nut b is locked to the bolt a by the washer c, the upturned flange d of which engages the side faces of the nut and the lugs f of which enter a recess e in the bolt, the recess being of a depth equal to the depth of the thread. The lugs f are bent over into an annular groove in the nut so that the washer is permanently attached to it.
Patent GB-961374-A (GB)
Title: Process for the production of fungicidal wrappings for perishable goods
IPC: B65D65/42
Filed: 1962-07-06
Abstract: Fungicidal wrapping materials are made by applying to a base sheet material a mixture of a fungicide and a binder by means of a spot-set coating roller.  Specified bases are paper and parchment sheets and regenerated cellulose, synthetic resin and metal foils. Specified fungicides are sorbic acid, benzoic acid, dehydroacetic acid and their salts and parahydroxybenzoic acid esters. Suitable binding agents are dispersions of polyvinyl acetate, polyvinyl propionate, polyvinylidene chloride, polyacrylates, polymethacrylates and styrenebutadiene latex.  The coatings may also comprise thickening agents, e.g. polyvinyl alcohol, methyl- or hydroxyethyl-cellulose; wetting agents and/or pigments. The amount of coating applied may be regulated and the homogeneity of the coating assured by varying the rate of advance of the wrapping material in comparison with the paster roller.